ES2176194T3 - Soporte de grabacion magnetooptico y metodos de grabacion y reproduccion de informacion que utilizan en soporte de grabacion. - Google Patents
Soporte de grabacion magnetooptico y metodos de grabacion y reproduccion de informacion que utilizan en soporte de grabacion.Info
- Publication number
- ES2176194T3 ES2176194T3 ES93306690T ES93306690T ES2176194T3 ES 2176194 T3 ES2176194 T3 ES 2176194T3 ES 93306690 T ES93306690 T ES 93306690T ES 93306690 T ES93306690 T ES 93306690T ES 2176194 T3 ES2176194 T3 ES 2176194T3
- Authority
- ES
- Spain
- Prior art keywords
- magnetic layer
- recording
- plane
- recording media
- magnetopoptic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
- G11B11/10584—Record carriers characterised by the selection of the material or by the structure or form characterised by the form, e.g. comprising mechanical protection elements
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10502—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing characterised by the transducing operation to be executed
- G11B11/10504—Recording
- G11B11/10508—Recording by modulating only the magnetic field at the transducer
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10502—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing characterised by the transducing operation to be executed
- G11B11/10515—Reproducing
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
- G11B11/10586—Record carriers characterised by the selection of the material or by the structure or form characterised by the selection of the material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/90—Magnetic feature
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
- Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
- Y10T428/264—Up to 3 mils
- Y10T428/265—1 mil or less
Abstract
UN MEDIO DE GRABACION MAGNETOOPTICO COMPRENDE UNA PRIMERA CAPA MAGNETICA EN LA QUE LOS DATOS SE HAN DE ALMACENAR, Y UNA SEGUNDA CAPA MAGNETICA. LA PRIMERA CAPA MAGNETICA ES UNA PELICULA DE MAGNETIZACION PERPENDICULAR TANTO A TEMPERATURA AMBIENTE COMO A TEMPERATURAS ELEVADAS. LA SEGUNDA CAPA MAGNETICA ES UNA PELICULA DE MAGNETIZACION PERPENDICULAR O EN PLANO A TEMPERATURA AMBIENTE Y SE CAMBIA A UNA PELICULA DE MAGNETIZACION EN PLANO O PERPENDICULAR A TEMPERATURA ELEVADA. UN MEDIO DE GRABACION COMPRENDE POR EJEMPLO, UNA FASE DE PROYECCION DE UN PUNTO DE LUZ SOBRE EL MEDIO DE GRABACION DESDE EL LADO DE LA SEGUNDA CAPA MAGNETICA, UNA FASE DE CAMBIO SOLO DE UN AREA DE ALTA TEMPERATURA DENTRO DE UNA PARTE DE PROYECCION DE PUNTO DE LUZ DE LA SEGUNDA CAPA MAGNETICA A UNA PELICULA DE MAGNETIZACION EN PLANO A PERPENDICULAR , Y UNA FASE DE INFORMACION DE DETECCION DE INFORMACION ALMACENADA EN LA PRIMERA CAPA MAGNETICA DETECTANDO UNA LUZ REFLEJANTE DESDE EL MEDIO DE GRABACION. LA LUZ REFLEJANTE ES INFLUIDA POR UN EFECTO MAGNETOOPTICO DE LA PARTE DE PELICULA DE MAGNETIZACION PERPENDICULAR.
Applications Claiming Priority (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23026692 | 1992-08-28 | ||
JP23027792A JPH0676405A (ja) | 1992-08-28 | 1992-08-28 | 光磁気記録媒体及び該媒体の記録方法 |
JP23026592 | 1992-08-28 | ||
JP05038137A JP3101462B2 (ja) | 1993-02-26 | 1993-02-26 | 光磁気記録媒体及び該媒体を用いた情報再生方法 |
JP3813893 | 1993-02-26 | ||
JP4378693 | 1993-03-04 | ||
JP6665693A JPH06274958A (ja) | 1993-03-25 | 1993-03-25 | 光磁気記録媒体及び該媒体を用いた情報記録及び再生方法 |
JP9802593A JPH06309716A (ja) | 1993-04-23 | 1993-04-23 | 光磁気記録媒体及び該媒体の再生方法 |
JP18840093A JP3359102B2 (ja) | 1992-08-28 | 1993-07-29 | 光磁気記録方法 |
JP18843893A JPH06124500A (ja) | 1992-08-28 | 1993-07-29 | 光磁気記録媒体及び該媒体の再生方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2176194T3 true ES2176194T3 (es) | 2002-12-01 |
Family
ID=27579893
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES93306690T Expired - Lifetime ES2176194T3 (es) | 1992-08-28 | 1993-08-24 | Soporte de grabacion magnetooptico y metodos de grabacion y reproduccion de informacion que utilizan en soporte de grabacion. |
Country Status (4)
Country | Link |
---|---|
US (2) | US5616428A (es) |
EP (2) | EP1143434A3 (es) |
DE (1) | DE69331924T2 (es) |
ES (1) | ES2176194T3 (es) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9103729B1 (en) | 2011-09-30 | 2015-08-11 | Seagate Technology Llc | Method and apparatus for determining curie temperature distribution of a sample of magnetic material |
Families Citing this family (46)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5831944A (en) * | 1993-02-26 | 1998-11-03 | Canon Kabushiki Kaisha | Magnetooptical recording medium and method for reproducing information from a magnetooptical recording medium having three layers |
USRE38501E1 (en) | 1992-08-28 | 2004-04-20 | Canon Kabushiki Kaisha | Magnetooptical recording medium and information recording and reproducing methods using the recording medium |
US6665235B2 (en) | 1992-11-06 | 2003-12-16 | Sharp Kabushiki Kaisha | Magneto-optical recording medium and recording and reproducing method and optical head designed for the magneto-optical recording medium |
EP0974961B1 (en) * | 1992-11-06 | 2003-04-02 | Sharp Kabushiki Kaisha | Magneto-optical recording medium and recording and reproducing method and optical head designed for the magneto-optical recording medium |
JP3092363B2 (ja) * | 1992-12-01 | 2000-09-25 | 松下電器産業株式会社 | 光磁気記録媒体 |
JP3297513B2 (ja) * | 1993-03-04 | 2002-07-02 | キヤノン株式会社 | 光磁気記録媒体及び該媒体を用いた情報再生方法 |
US5719829A (en) * | 1993-03-04 | 1998-02-17 | Canon Kabushiki Kaisha | Magnetooptical recording medium allowing super-resolution, and information reproduction method using the medium |
JP3078145B2 (ja) * | 1993-04-23 | 2000-08-21 | キヤノン株式会社 | 光磁気記録媒体の製造方法 |
JP2809991B2 (ja) * | 1994-01-14 | 1998-10-15 | 富士通株式会社 | 光磁気記録媒体及び該媒体に記録された情報の再生方法 |
CA2142767C (en) * | 1994-02-21 | 1998-11-17 | Naoki Nishimura | Magneto-optical recording medium, and information reproducing method using the medium |
JPH07254175A (ja) * | 1994-03-16 | 1995-10-03 | Canon Inc | 光磁気記録媒体および該媒体を用いた情報記録再生方法 |
EP0686970A3 (en) * | 1994-06-10 | 1996-07-24 | Canon Kk | Magneto-optical recording medium and playback method using this medium |
JP3164975B2 (ja) * | 1994-08-24 | 2001-05-14 | キヤノン株式会社 | 光磁気記録媒体及び該媒体を用いた情報再生方法 |
JPH08106660A (ja) * | 1994-10-05 | 1996-04-23 | Canon Inc | 光磁気記録媒体及び該媒体を用いた情報再生方法 |
JP3126612B2 (ja) * | 1994-12-26 | 2001-01-22 | キヤノン株式会社 | 記録媒体搬送装置 |
JPH08180482A (ja) * | 1994-12-27 | 1996-07-12 | Canon Inc | 光磁気記録媒体及び該媒体を用いた情報再生方法 |
US5593790A (en) * | 1994-12-29 | 1997-01-14 | Imation Corp. | Interference super-resolution using two magnetic layer construction |
EP0740296A3 (en) * | 1995-04-26 | 1998-02-25 | Sanyo Electric Co. Ltd | Magneto-optical recording media |
JP3554083B2 (ja) * | 1995-07-18 | 2004-08-11 | キヤノン株式会社 | 光磁気記録媒体及び該媒体の情報記録方法 |
JPH0954993A (ja) * | 1995-08-15 | 1997-02-25 | Canon Inc | 光磁気記録媒体及び該媒体の情報再生方法 |
US5968678A (en) * | 1995-08-31 | 1999-10-19 | Sanyo Electric., Ltd. | Magneto-optical recording medium and manufacturing method thereof |
JPH09120595A (ja) * | 1995-10-23 | 1997-05-06 | Sharp Corp | 光磁気記録媒体 |
JP3781823B2 (ja) * | 1996-05-27 | 2006-05-31 | シャープ株式会社 | 光磁気記録媒体及びその再生方法 |
JP3545133B2 (ja) | 1996-07-23 | 2004-07-21 | シャープ株式会社 | 光磁気記録媒体の再生方法及び光磁気記録媒体 |
US6226233B1 (en) | 1996-07-30 | 2001-05-01 | Seagate Technology, Inc. | Magneto-optical system utilizing MSR media |
JP3660072B2 (ja) * | 1996-09-26 | 2005-06-15 | シャープ株式会社 | 光磁気記録媒体及びその記録方法並びに光磁気記録装置 |
JPH10134429A (ja) * | 1996-10-25 | 1998-05-22 | Fujitsu Ltd | 光磁気記録媒体及びその再生方法 |
JPH10172190A (ja) * | 1996-12-09 | 1998-06-26 | Sharp Corp | 光磁気記録媒体及びその製造方法 |
US6147939A (en) | 1997-03-06 | 2000-11-14 | Sharp Kabushiki Kaisha | Magneto-optical recording medium having intermediate layer of in-plane magnetization |
JPH11134732A (ja) | 1997-08-29 | 1999-05-21 | Canon Inc | 情報記録再生方法 |
US6111784A (en) * | 1997-09-18 | 2000-08-29 | Canon Kabushiki Kaisha | Magnetic thin film memory element utilizing GMR effect, and recording/reproduction method using such memory element |
JP3492525B2 (ja) * | 1998-06-19 | 2004-02-03 | シャープ株式会社 | 光磁気記録媒体 |
DE59910434D1 (de) * | 1998-06-27 | 2004-10-14 | Philips Intellectual Property | Magneto-optisches Speichermedium mit Doppelmaskierung |
KR100340656B1 (ko) * | 1998-09-10 | 2002-06-20 | 마찌다 가쯔히꼬 | 광자기 기록 매체 및 그 제조 방법 |
JP3995833B2 (ja) * | 1999-06-29 | 2007-10-24 | シャープ株式会社 | 光磁気記録媒体 |
JP2001023259A (ja) * | 1999-07-09 | 2001-01-26 | Sony Corp | 光磁気記録媒体およびその製造方法 |
JP2001307393A (ja) | 2000-04-25 | 2001-11-02 | Canon Inc | 光磁気再生装置 |
JPWO2002027713A1 (ja) * | 2000-09-25 | 2004-02-26 | 日立マクセル株式会社 | 情報記録媒体、情報記録装置及び記録方法 |
US7035138B2 (en) * | 2000-09-27 | 2006-04-25 | Canon Kabushiki Kaisha | Magnetic random access memory having perpendicular magnetic films switched by magnetic fields from a plurality of directions |
CN1500267A (zh) * | 2001-03-26 | 2004-05-26 | 日立麦克塞尔株式会社 | 光磁记录介质及其再生方法 |
JP2002352484A (ja) * | 2001-05-25 | 2002-12-06 | Fujitsu Ltd | 光磁気記録媒体 |
JP2003263806A (ja) * | 2002-03-12 | 2003-09-19 | Canon Inc | 光磁気記録媒体 |
EP1563492A1 (en) * | 2002-11-01 | 2005-08-17 | Koninklijke Philips Electronics N.V. | Thermally-assisted recording medium with a storage layer of antiferromagnetic double-layer structure with anti-parallel orientation of magnetization |
JP2005050400A (ja) * | 2003-07-30 | 2005-02-24 | Canon Inc | 光磁気記録媒体 |
JP2005222669A (ja) | 2004-01-05 | 2005-08-18 | Fujitsu Ltd | 磁気記録媒体および磁気記憶装置 |
US10909139B2 (en) * | 2018-06-13 | 2021-02-02 | Microsoft Technology Licensing, Llc | SQL query formatting by examples |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1326547C (en) * | 1988-07-13 | 1994-01-25 | Masahiko Kaneko | Thermomagnetic recording method |
US5168482A (en) * | 1989-08-31 | 1992-12-01 | Sony Corporation | Magnetooptical recording and playback method employing multi-layer recording medium with record holding layer and playback layer |
JP2910084B2 (ja) * | 1989-09-06 | 1999-06-23 | ソニー株式会社 | 光磁気記録媒体における信号再生方法 |
JP2574911B2 (ja) * | 1990-01-10 | 1997-01-22 | シャープ株式会社 | 光磁気記録方法 |
JPH04219642A (ja) * | 1990-12-19 | 1992-08-10 | Ricoh Co Ltd | 光磁気記録媒体及び光磁気記録方法 |
JP2969963B2 (ja) * | 1990-12-28 | 1999-11-02 | ソニー株式会社 | 光磁気記録媒体における信号再生方法 |
CA2060549C (en) * | 1991-02-08 | 2002-08-13 | Masumi Ohta | Magneto-optical recording medium |
JP2839783B2 (ja) * | 1991-04-17 | 1998-12-16 | シャープ株式会社 | 光磁気記録媒体、再生装置及び再生方法 |
JP2812817B2 (ja) * | 1991-07-08 | 1998-10-22 | シャープ株式会社 | 光磁気記録媒体 |
EP0974961B1 (en) * | 1992-11-06 | 2003-04-02 | Sharp Kabushiki Kaisha | Magneto-optical recording medium and recording and reproducing method and optical head designed for the magneto-optical recording medium |
JP3072812B2 (ja) * | 1993-04-08 | 2000-08-07 | キヤノン株式会社 | 光磁気記録媒体及び該媒体の情報再生方法 |
JP3078145B2 (ja) * | 1993-04-23 | 2000-08-21 | キヤノン株式会社 | 光磁気記録媒体の製造方法 |
-
1993
- 1993-08-24 ES ES93306690T patent/ES2176194T3/es not_active Expired - Lifetime
- 1993-08-24 DE DE69331924T patent/DE69331924T2/de not_active Expired - Fee Related
- 1993-08-24 EP EP01201745A patent/EP1143434A3/en not_active Withdrawn
- 1993-08-24 EP EP93306690A patent/EP0586175B1/en not_active Expired - Lifetime
-
1996
- 1996-05-07 US US08/643,833 patent/US5616428A/en not_active Expired - Fee Related
-
1997
- 1997-01-03 US US08/774,721 patent/US5889739A/en not_active Ceased
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9103729B1 (en) | 2011-09-30 | 2015-08-11 | Seagate Technology Llc | Method and apparatus for determining curie temperature distribution of a sample of magnetic material |
US10006884B1 (en) | 2011-09-30 | 2018-06-26 | Seagate Technology Llc | Method and apparatus for determining Curie temperature distribution of a sample of magnetic material |
Also Published As
Publication number | Publication date |
---|---|
DE69331924T2 (de) | 2002-10-10 |
DE69331924D1 (de) | 2002-06-20 |
EP1143434A3 (en) | 2001-12-12 |
US5616428A (en) | 1997-04-01 |
EP1143434A2 (en) | 2001-10-10 |
EP0586175B1 (en) | 2002-05-15 |
US5889739A (en) | 1999-03-30 |
EP0586175A1 (en) | 1994-03-09 |
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